On Tap Today: Expiring Lockups, Quiet Periods in Spotlight

Expect talk about tech as the quiet period expires on three communications companies.

Sonus Networks (SONS Quote), a provider of voice infrastructure products, and Stanford Microdevices (SMDI Quote), which sells radio components used primarily in the wireless industry, will come off their quiet periods today.

Broadband technology firm Centillium Communications (CTLM Quote) and Universal Compression Holdings (UCO Quote), offering natural gas compression services, reached the end of their quiet periods on Sunday. The two companies made their trading debuts on the same day last month, and both closed above their initial public offering prices. Centillium shares finished up 3 7/8 at 22 7/8, while Universal Compression shares edged 1/16 above their $22 offering price.

Also during the weekend, lockups on Maxygen (MAXY Quote)and Tibco Software (TIBX Quote) expired. Goldman Sachs, one of three brokerage firms reporting this week, is the lead underwriter for both.

IPO Lockups Expiring

(TheStreet.com's Ben Holmes, who heads TSC's ipoPros.com subsidiary, keeps a close eye on lockup expirations every week. For more on lockups and why they matter, check out Holmes' primer on the subject. The full current lockup list is published separately.)

Lockup End	Deal Name	Symbol	Lead Underwriter
6/18/00	Maxygen	(MAXY:Nasdaq)	Goldman Sachs
6/19/00	Tibco Software	(TIBX:Nasdaq)	Goldman Sachs
* = Lockup expiration may be extended or modified by a pending secondary offering.

IPO Quiet Periods Expiring

(TheStreet.com's Ben Holmes, who heads TSC's ipoPros.com subsidiary, keeps a close eye on quiet-period expirations every week. For more on quiet periods and why they matter, check out Holmes' primer on the subject. The full current quiet-period list is published separately.)

Quiet Period End	Deal Name	Symbol	Lead Underwriter
6/18/00	Centillium Communications	(CTLM:Nasdaq)	Credit Suisse First Boston
6/18/00	Universal Compression Holdings	(UCO:NYSE)	Merrill Lynch
6/19/00	Sonus Networks	(SONS:Nasdaq)	Goldman Sachs
6/19/00	Stanford Microdevices	(SMDI:Nasdaq)	Deutsche Banc Alex. Brown

Speeches and Testimony

• The Securities and Exchange Commission's director of investment management, Paul Roye, will address the Investment Advisors Compliance Conference, held in New York by Glasser Legal Works.